2-Oxovaleric Acid - ≥95%(GC) , CAS No.1821-02-9

CAS: 1821-02-9 Cat. No.: O159954 Formula: C5H8O3 Molecular Weight: 116.12 Beilstein Registry Number: 635884 EC Number: 217-340-2
AVAILABLE TO ORDER
GRADE & PURITY ≥95%(GC)
Synonyms
Pentanoic acid, 2-oxo- | 2-Oxo-n-valeric acid | 2-Oxopentanoic acid | 2-oxo-pentanoic acid | alpha-Oxovaleric acid | CHEBI:33033 | LS-13052 | 2-oxo-Pentanoate | EINECS 217-340-2 | InChI=1/C5H8O3/c1-2-3-4(6)5(7)8/h2-3H2,1H3,(H,7,8 | MFCD00066435 | Pentanoi
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
★
Size
Germany (EU)
USA*
Price
Qty
1ml
O159954-1ml
—
2 In stock
€104.04
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Why this grade

≥95%(GC) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Pentanoic acid, 2-oxo- | 2-Oxo-n-valeric acid | 2-Oxopentanoic acid | 2-oxo-pentanoic acid | alpha-Oxovaleric acid | CHEBI:33033 | LS-13052 | 2-oxo-Pentanoate | EINECS 217-340-2 | InChI=1/C5H8O3/c1-2-3-4(6)5(7)8/h2-3H2,1H3,(H,7,8 | MFCD00066435 | Pentanoi
Specifications & Purity
≥95%(GC)
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%(GC)
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/504754825
Canonical Smiles
CCCC(=O)C(=O)O
IUPAC Name
2-oxopentanoic acid
InChIKey
KDVFRMMRZOCFLS-UHFFFAOYSA-N
INCHI
1S/C5H8O3/c1-2-3-4(6)5(7)8/h2-3H2,1H3,(H,7,8)
Isomeric SMILES
CCCC(=O)C(=O)O
WGK Germany
3
Molecular Weight
116.12
Beilstein
635884
Reaxy-Rn
635884
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=635884&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassKeto acids and derivatives
SubclassShort-chain keto acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentShort-chain keto acids and derivatives
Alternative Parents Methyl-branched fatty acids  Alpha-keto acids and derivatives  Alpha-hydroxy ketones  Monocarboxylic acids and derivatives  Carboxylic acids  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Branched fatty acid - Methyl-branched fatty acid - Short-chain keto acid - Alpha-keto acid - Fatty acyl - Alpha-hydroxy ketone - Ketone - Carboxylic acid derivative - Carboxylic acid - Monocarboxylic acid or derivatives - Carbonyl group - Hydrocarbon derivative - Organic oxygen compound - Organooxygen compound - Organic oxide - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms.
External Descriptors Oxo fatty acids
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

4 results found

Lot NumberCertificate TypeDateItem
I2301686Certificate of AnalysisAug 10, 2023 O159954
I2301705Certificate of AnalysisAug 10, 2023 O159954
H2229205Certificate of AnalysisJul 29, 2022 O159954
H2229290Certificate of AnalysisJul 29, 2022 O159954
Chemical and Physical Properties
SensitivityMoisture sensitive;heat sensitive
x_refractive_index1.43
x_flash_point_drop_fahrenheit201.2 °F
x_flash_point_drop_centigrade94 °C
x_boil_point_char88-90°C/12mmHg
x_melt_point_char7-9 °C
Molecular Weight116.110 g/mol
XLogP30.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass116.047 Da
Monoisotopic Mass116.047 Da
Topological Polar Surface Area54.400 Ų
Heavy Atom Count8
Formal Charge0
Complexity106.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What are the CAS number, molecular formula and molecular weight?
The CAS Number is 1821-02-9, the molecular formula is C5H8O3, and the molecular weight is 116.12 g/mol. InChIKey KDVFRMMRZOCFLS-UHFFFAOYSA-N.
What is the purity of this product, and how is it determined?
This product is supplied at ≥95% purity, determined by gas chromatography (GC). Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at 2–8 °C under argon. It is supplied under an argon blanket; reseal under inert gas after each use.
How is this product shipped?
This product ships chilled on wet ice. Unpack on arrival and transfer it to the storage condition stated above.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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